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CVE-2022-50876· NVD / CVE Program· CNA Linux

usb: musb: Fix musb_gadget.c rxstate overflow bug

Noroxi assessment

Priority: Monitor (action score 0/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.23% (FIRST EPSS).
  • Fixed version: Linux Linux 3c84c7f592c4ba38f54ddaddd0115acc443025db, 523313881f0aa5cbbdb548ce575b6e58b202bd76, 7c80f3a918ba9aa26fb699ee887064ec3af0396a.

Low priority for now. Upgrade to Linux Linux 3c84c7f592c4ba38f54ddaddd0115acc443025db, 523313881f0aa5cbbdb548ce575b6e58b202bd76, 7c80f3a918ba9aa26fb699ee887064ec3af0396a or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

In the Linux kernel, the following vulnerability has been resolved: usb: musb: Fix musb_gadget.c rxstate overflow bug The usb function device call musb_gadget_queue() adds the passed request to musb_ep::req_list,If the (request->length > musb_ep->packet_sz) and (is_buffer_mapped(req) return false),the rxstate() will copy all data in fifo to request->buf which may cause request->buf out of bounds. Fix it by add the length check : fifocnt = min_t(unsigned, request->length - request->actual, fifocnt);

—No exploit Fix available
Published
Dec 30, 2025
Updated
Jun 17, 2026
EPSS
0.2% · 13th percentile
CWE
—

Report tools

JSON

Action score

0

Monitor

Low priority for now.

CVSS
0 / 40 · —
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

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When you'll hear from us

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • 4.3affected
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before 826f84ab04a5cafe484ea9c2c85a3930068e5cb7affected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before a1008c8b9f357691ce6a8fdb8f157aecb2d79167affected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before 7c80f3a918ba9aa26fb699ee887064ec3af0396aaffected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before d6afcab1b48f4051211c50145b9e91be3b1b42c9affected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before acf0006f2b2b2ca672988875fd154429aafb2a9baffected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before 3c84c7f592c4ba38f54ddaddd0115acc443025dbaffected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before a9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96affected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before 523313881f0aa5cbbdb548ce575b6e58b202bd76affected · git
    • 03840fad004ce8a56bc8b3bb60a2df10f6f9481e and later · before eea4c860c3b366369eff0489d94ee4f0571d467daffected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.0.3-16.0.3-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

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  • CVE-2026-74309vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
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  • CVE-2026-74280crypto: marvell/octeontx - fix DMA cleanup using wrong loop index
    40Plan
  • CVE-2026-74279crypto: cavium/cpt - fix DMA cleanup using wrong loop index
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux3c84c7f592c4ba38f54ddaddd0115acc443025dbVendor (CNA)
Linux Linux523313881f0aa5cbbdb548ce575b6e58b202bd76Vendor (CNA)
Linux Linux7c80f3a918ba9aa26fb699ee887064ec3af0396aVendor (CNA)
Linux Linux826f84ab04a5cafe484ea9c2c85a3930068e5cb7Vendor (CNA)
Linux Linuxa1008c8b9f357691ce6a8fdb8f157aecb2d79167Vendor (CNA)
Linux Linuxa9ccd2ab1becf5dcb6d57e9fcd981f5eaa606c96Vendor (CNA)
Linux Linuxacf0006f2b2b2ca672988875fd154429aafb2a9bVendor (CNA)
Linux Linuxd6afcab1b48f4051211c50145b9e91be3b1b42c9Vendor (CNA)
Linux Linuxeea4c860c3b366369eff0489d94ee4f0571d467dVendor (CNA)
debian:linux6.0.3-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

No CVSS vector for this record, so attack conditions can't be derived.

Weakness class (CWE)

—

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (8 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records